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HENRY E. row); or FRANKLIN, MASSACHUSETTS. Letters Patent No. 70,608, dated November 5, 1867.

IMPROVED FERTILIZER,

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TO ALL TO WHOM THESE PRESENTS SHALL COME: I

Be it known that I, HENRY E; POND, of' Franklin, in the county of Norfolk, and State of Massachusetts; have invented a. new and useful artificial fertilizer, which I call Ni tro-Pho'sphated Fertilizer, and do hereby declare the following to be a. full, clear, and exact description of its ingredients and the process for manufacturing it.

In preparing the above-mentioned fertilizer, I take meadow-muck in the proportion of fifteen hundred to two thousand pounds, anddry it naturally or artificially un-til about one-half of its moisture hasbeen evaporated, uud add to the mass twenty pounds, in thesnrne ratio, of sulphuric acid, and mix the two thoroughly. After standing for about ten hours the mass should again be mixed or stirred, and sulphate of lime or gypsum to the amount of one hundred and fifty pounds in the above proportion incorporated with it. I then take nitrate of potash fifty, salt eighty, nitrate of soda. one hundred, in the proportions of fifty, eighty, and one hundred pounds, or .thereabouts, and dissolve them in as little boiling water as will answer the piurposc, and thoroughly mix this solution with the muck and acid. After standing for five hours, I add and thoroughly mix with the massone hundred pounds'in proportion of superphosph-oto or biphosphatc of lime, and let the whole thoroughly dry, when it may be placed in barrels for transportation. The gypsum, supcrphosphate of lime, and nitrate of potnsh, and soda. may be ndded'in varying proportions, uc'cording to the use required of the fertilizer, or other chemieuls may be added or substituted.

My invention consists principally in the use of sulphuric acid as applied to meadow-muck, or its equivalent, and the incorporation of soltpecre and other salts therewith. The acid-destroys the germs of'sorrel, or

other plants and weeds, which would-otherwise grow to a great extent. The fertilizer under the formula, sub-.

stentielly as before given, possesses great fu'tilizing properties, and can be manufactured at 3 cost very much below that of other artificial fertilizers in use. i i

I claim as my invention, and desire-to secure by Letters Patent-' The new fertilizer, substantially as before described.

' HENRY E. POND.

Witnesses:

'E. G. Gnrrrrrn,

Fnnnnnrcn Gunner 

